Door-hinge.



PATENTED DEU. 10, 1907.y

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Dwi/hmmag UNITED srArEs PATENT oEErcE.

WILLIAM K. HENRY, OF NEW` BRITAIN, CONNECTICUT, ASSIGNOR TO B. & F. CORBIN, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

Doon-HINGE.

vSpecification of Letters Patent.

Patented Dec. .10, 19.07.

Application filed January 25. 1907. Serial No. 353 .934.

To all whom it 'may concern.'

Be it known that I,-WILLIAM K. HENRY, a citizen of the United States, residing at New Britain, county rof Hartford, Connecticut, have invented certain new and useful Improvements in Door-Hinges, of which the folowing is a full, clear, and vexact description.

.My invention relates to im rovements in door hinges, articularly usefu in connection with heavy oors to actas a support for the same in place of the usual hinge.

' The object ofthe invention is not merely to provide a bearing of this type with antifriction ballsl arranged to perform their usual function, but rather it is to combine the several elements, including the anti-friction balls, in such a manner as to make a com-v plete structure which is compact and designed to withstand .severe strains in use.

In the accompanying drawing Figure 1 is a side elevation of the complete hinge., Fig. 2

is a vertical sectional elevation of the com` lete hinge. Fig. 3 is a plan view of the liinge with the cover plate removed. Fig. 4 is 'a plan view of the cover late. Fig. 5 is a side elevation of the spind e, detached.

A is the case, generally of cylindrical form and preferably made from cast metal. B is an annular flange at its' upper edge.

D-D arevertical offsets or lugs on o po-I site sides of the body of case A.l These ugs perform a double function; first, they perform the spline function in that when the device is inserted into a suitable cavity these lugs or offsets will hold the case A -against rotation, and second, they afford room for screw-holes arranged to receive machine screws em loyed to .hold the cover plate in place in tlie manner hereinafter described.

E-E are screw-holes in thev flange B, which permit of theuse of ordinary wood screws (not shown) -for securing the case in place.` Thek center of the case is bored nearly through and at the bottom of said bore there is provided a suitable annular ball-race F having balls G-G therein.

H is a spindle which rotatably fits the bore of case A 1n such a kmanner as to receive lateral support therefrom, while the lower end of the Spindle is supported u on the balls. That part of the spindle stan ing above the flange B is reduced in diameter, so as to form a shouldered portion H.

I is a cap plate orcover spindle, with the result that when the parts are assembled a portion of the side thrust may be taken by the cap plate I as well asby the sides of the bore in the case A. The cap plate I overstands the shouldered portion H having a central -bore of a size to fit the reduced portion of the and hence prevents the accidental removal of the spindle.

K-K are machine screws which may be employed to hold the cap plate in place, these screws passing through said cap plate and into tapped openings coincident with the lugs B-D in the case.

. f desired, he ball-race at the bottom of i the bore may be formed, as shown, by a separable steel plate fitted in said bore. So also a hardened steel washer may be placed between the lower end of the spindle H and the balls, to prevent undue wear. Such a bearing is especially adapted for use' in connection with heavy doors, such as found in fireproof buildings, vaults and the like.

What I claim is:

1. In a door hinge, the combination with a case having a central bore therein extending partiallyl through the same, and a series of balls at the bottom thereof, of a spindle hav- `ing a shouldered portion snuglyfitting the bore and rotatably supported'upon the balls therein, and a cover plate overstanding the end of the case and the shouldered portion of said spindle.

2. In a'door hinge, the combination with a substantially cylindrical case having off-set lugs integral with the outer surface thereof, and an annular flange at the upper end thereof, said case having a central bore eX- tending part way through the same, of a spindle having a shouldered portion rotatably iitted to said bore, anti-frictio" device between the lower end of the spindle and the bottomof said case, and a removable cover plate overstanding` the case ilange nad shouldered portion of said spindle.

. WILLIAM K. HENRY.

.Witnessesz WM. V. COLLIN, G. ERNEST R'OAB. 

